Device for pointing spindles.



A.. M. GUILLET'.

DEVICE FOR POINTING SPINDLES.

, APPLICATION FILED JUNE28. 19m

1,254,900. V. Patented-Jan. 29,1918.

2 SHEETS-SHEET 1.

1,254,900. Patelgfpedjan. 29, 1918.;-

. M 2 SHEETS SHEET 2.

/ EL J V A. M. GUILLET.

DEVICE FOR POINTING SPINDLES.

APPLICATION FILED JUNE 28, 1917.

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Illllllll @NTTED @TATEg PATENT @FFTQE.

ALBERT M. GUILLET, OF CHARLOTTE, NORTH CAROLINA.

DEVICE FOR rornrmo srn'vnLnsl Specification of Letters Patent. PatentedJan, 29, 1918,

Application filed June 28, 1917. Serial No. 177,547.

To all whom it may concern:

Be it known that I, ALBERT M. GUILLn'r, a citizen of the United States.residing at Charlotte, in the county of h/Iecklcuburg and State of NorthCarolina, have invented certain new and useful Improvements in Devicesfor Pointing Spindles; and I. do declare the following to be a full,clear, and exact description of the invention. such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to certain new and useful improvements in spindlepointing or sharpening devices.

The primary object of the invention is to provide an attachment forordinary machine lathes to be used for pointing or sharpening spindles,especially spindles of cotton mills and the like.

Another object of the invention is to provide a device of this characterhaving a new and improved construction by which the spindle is supportedand rotatably driven from a rotatablemember driven by the lathe.

The further object of the invention is to provide an attachment of thischaracter having a supporting table for receiving and supporting thespindle, said supporting table being adjustably mounted so as to allowthe spindle to be set at various angles to the grinding of the device.

A still further object of the invention is to generally improve upondevices of this class by the provision of an extremely simple, durableand inexpensive construction, one which will be eflicient and reliablein operation, and well adapted to the purpose for which it is designed.v I

With these and numerous other objects in view, the invention consists ofcertain novel features of construction, and the combination andarrangement of parts as will be hereinafter fully described and claimed.

In the accompanying drawing, forming a part of the application, and inwhich similar reference characters are used to designate like parts,throughout the several views:

Figure 1 is a top plan view of a conventional type of lathe, showing anattachment constructed in accordance with this invention appliedthereto;

Fig.2 is a horizontal sectional view thereof, taken substantially on theline 2-2 of Fig. l.

Fig. 3 is a detail sectional view taken on the plane of line 33 of Fig.l, and,

F1gs. 4 and 5 are transverse sectional vlews of a portion of the deviceon the lmes 4-4 of Fig. 1 and 55 of Fig. 3 respectively. I Referringmore particularly to the drawlngs, and especially to Fig. 1, aconventional form of machine lathe is shown, A designating the bed ofthe lathe, B the'carriage which is slidable longitudinally upon the bed,0 the head stock having the usual center D, and E the tail stock havingthe usual center F.

This invention which is an attachment for lathes such as above describedconsists of a rotating member here shown in the form of a shaft 1, whichis inserted between the centers D and E of the lathe, said shaft beingpreferably provided at its ends with suitable cone or other shapedrecesses to properly receive the points of the centers.

Before inserting the shaft 1 between the centers of the lathe, a dogGris applied to one end of the shaft, and this dog engages certainportions of the head stock of the lathe in the usual manner, to causethe shaft to be rotated when power is applied to said head stock. Fixedupon the shaftl in any suitable manner is a pulley 2, having a shallowgroove 3, in its periphery. Fixed also to the shaft 1 and. placed ashort distance from the pulley 2 is a grinding wheel 4.

The other essential part of the invention comprises a supporting tableconsisting of a table proper 5, which is clamped to the carriage of thelathe by the bolt which usually fastens the tool post or tool holdingmember to the carriage. The table proper is here shown as being in theform of a flat plate.

Bolted to one end of the table proper is a supporting member 6,comprising a substantial flat rectangular shaped plate having alongitudinal slot 7, through which the bolt which screws into the table5 extends, and a post 8 at one end thereof. This post Sis bolted to theplate 6 and has no movement relative to the same. The reference numeral9 designates another post which is identical in construction with thepost 8,-

but instead of having no movement with respect to the plate 6, it moveslongitudinally relatively to the same, the means for securing the post 9to the plate 6 comprising a stud which projects downwardly from the post9 through the slot 7 and being provided with a clamp nut on its lowerthreaded end.

The posts 8 and 9 have one of their vertical edges recessed at 10, andmounted transversely in these recesses are pairs of rollers 11. Theserollers 11 form what may be termed an open bearing for renewing aportion of a spindle which the device is adapted to grind.

The reference numeral 12 designates a substantially rectangular fiatplate having a longitudinal slot 13 through which a bolt let extends toadjustably connect it to the other end of the table proper 5. Fixed toone end of the plate 12 is an upright post 15 on which is revolublymounted a pair of similarly constructed pulleys 16 having peripheralgrooves 17.

In grinding the spindle such as designated by the numeral 18, thespindle is placed so that portions of it engage the pairsof rollers 11.The whirl 19 of the spindle has its smaller end in engagement with oneside of the post 9 to prevent longitudinal movement of the spindle asits point is brought to bear upon the grinding wheel 4:. The whirl 19 isprovided with the usual grove 20, and passing around and disposed in thegroove is a belt 21. This belt 21 passes around the pulleys 16 and alsoaround the pulley 2, be-

ing disposed in the grooves in said pulleys. The plate 6 is adjustedwith respect to the table proper 5, so "that the spindle will be groundat the proper angle. The plate 12 is then adjusted angularly orlongitudinally or both, so as to .t ghten the belt 21 or to properlyposition it so that when the shaft 1 is rotated the spindle 18 will berotated. The spindle is thus maintained in its position with respect tothe rollers 11 by means of the belt 21.

It will be seen that a device can be quickly and easily adapted topractically all types of machine lathes without adapting the lathes inany special manner in the application of such a device thereto. Thedevice is of extremely simple construction and is strong and durable andwill not easily get out of order. It is adjustable to all various anglesto which the points of a spindle should be ground and the spindle can bequickly and easily applied thereto.

From the foregoing description taken in connection with the accompanyingdrawings,ethe construction, use, and operation of the device will bereadily understood without a more extended explanation.

As various changes in form, proportion, and in minor details ofconstruction may be resorted to without departing from the spirit ofthis invention, it is to be understood that I do not Wish to be limitedto the precise construction herein shown and described.

1. A spindle pointing device comprising a rotating member, a pulley anda grinding wheel mounted upon said rotating member, a supporting table,a supporting plate adjustably mounted at one end of said supportingtable and provided with means for receiving and supporting a spindle inposition to be ground by said grinding wheel, a second plate adjustablymounted at the other end of said table, a pair of tightening pulleysmounted upon said second plate, and a belt passing around said pulleysand the whirl of the spindle for imparting a rotary motion to thelatter.

2. A spindle pointing device comprising a rotating member, a pulley anda grinding Wheel mounted upon said rotating member, a supporting table,a pair of posts mounted upon said supporting plate and extendingupwardly from the same, said posts being each provided with a pair ofrollers for receivin g and supporting a spindle thereon in position tobe ground by said grinding wheel, a tightening pulley adjustablymount edat the other end of said table, and a belt passing around said pulleysand the whirl of the spindle for imparting a rotary motion to thelatter.

3. A spindle pointing device comprising a shaft adapted to be insertedbetween the centers of a machine lathe and rotated by the latter, apulley and a grinding wheel upon said shaft, a supporting table adaptedto be adjustably mounted upon the carriage of the lathe and providedwith means for receiving and supporting a spindle thereon in position tobe ground by said grinding wheel, a tightening pulley carried by saidtable, and a belt passing around said pulleys and the whirl of saidspindle for imparting a rotary motion ,to the latter.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing Witnesses.

ALBERT M. GUILLET.

Witnesses:

EDWARD B. SAUNDnRs, WV. SEYMOUR GRAY.

Copies or? this patent may be obtained for five cents each, byaddressing the Commissioner 92 Eateries.

Washington, 30. t3.

